PROBLEM TO BE SOLVED: To provide an environment improvement material where nitrification and denitrification effect as well as biological deodorizing effect come into view in a fermentation and ripeness environment of a treated material such as livestock excreta, a compost, or the like which act as an odor source.SOLUTION: The environment improvement material consists of one or two or more first group raw materials selected from among vegetable organic substrates, one or two or more second group raw materials selected from among microbial nutrition assistants, and one or two or more third group raw materials selected from among carbonization process material and microbial immobilization assistants. Incorporating and preparing the first group raw materials and the second group raw materials comes to an intermediate material. Final materials are obtained by incorporating and preparing the intermediate material and the third group raw materials. Incorporating and preparing humus soil of 20-40 pts.wt., bark compost of 20-40 pts.wt., and coconut shell fiber of 10-20 pts.wt. as the first group raw materials and rice bran of 20-30 pts.wt. and molasses of 1-10 pts.wt. as the second group raw materials comes to the intermediate material of 100 pts.wt. Incorporating and preparing the intermediate material of 70-90 pts.wt. and the third group raw materials of 10-30 pts.wt. comes to final materials 100 pts.wt.【課題】悪臭源となる家畜糞尿、堆肥その他の被処理材の発酵・腐熟環境下において生物学的な消臭効果とともに硝化・脱窒効果を顕現する環境改善資材を提供する。【解決手段】環境改善資材は、植物性有機質基材のなかから選ばれた１又は複数の第１群原料と、微生物栄養助材のなかから選ばれた１又は複数の第２群原料と、炭化処理材及び微生物固定化助材のなかから選ばれた１又は複数の第３群原料からなり、第１群原料と第２群原料を配合調製して中間資材とし、該中間資材に第３群原料を配合調製して最終資材を得るものである。第１群原料として腐植土２０～４０重量部、バーク堆肥２０～４０重量部、ヤシ殻繊維１０～２０重量部、及び第２群原料として米ぬか２０～３０重量部、糖密１～１０重量部を配合調製して中間資材１００重量部とし、中間資材７０～９０重量部と、第３群原料１０～３０重量部を配合調製して最終資材１００重量部とする。【選択図】 図３
